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JEE Main 2024
Conic Sections
Hyperbola
Medium

Question

Let the lengths of the transverse and conjugate axes of a hyperbola in standard form be 2a2 a and 2b2 b, respectively, and one focus and the corresponding directrix of this hyperbola be (5,0)(-5,0) and 5x+9=05 x+9=0, respectively. If the product of the focal distances of a point (α,25)(\alpha, 2 \sqrt{5}) on the hyperbola is pp, then 4p4 p is equal to ___________.

Answer: 2

Solution

This solution will guide you through solving a hyperbola problem by systematically applying key definitions and formulas. We'll break down the problem into logical steps, explaining the reasoning behind each calculation, and ensure proper mathematical notation.

1. Understanding the Key Concepts and Initial Setup

The problem involves a hyperbola in standard form. We are given its axis lengths, one focus, and its corresponding directrix. Our goal is to find the product of focal distances for a specific point on the hyperbola.

The fundamental definition of a hyperbola states that for any point P(x,y)P(x,y) on the hyperbola, the ratio of its distance from a focus FF to its distance from the corresponding directrix LL is a constant, called the eccentricity ee. Mathematically, this

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